(;GM[1]FF[4]SZ[19]
GN[Main line]
PC[https://senseis.xmp.net/?GokyoShumyoSection1Problem27/Solution]AP[GoWiki:2009]
DT[2023-01-18]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection1Problem27/Solution

Main line]
PL[W]

AB[pa][qa][ib][qb][ic][jc][oc][pc][rc][kd][nd][le][ne]
AW[na][jb][ob][pb][kc][lc][mc][nc]

;W[ka]C[W1]MN[1]
;B[ia]C[B2]MN[2]
;W[mb]C[W3]MN[3]
;B[oa]C[B4]MN[4]
;W[la]C[W5]MN[5]

;
)
